./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 011044826c7a01c153d09406112c335d599fb158d7a4b72e6a624d5427477c0d --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 16:38:48,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 16:38:48,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 16:38:48,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 16:38:48,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 16:38:48,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 16:38:48,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 16:38:48,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 16:38:48,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 16:38:48,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 16:38:48,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 16:38:48,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 16:38:48,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 16:38:48,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 16:38:48,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 16:38:48,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 16:38:48,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 16:38:48,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 16:38:48,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 16:38:48,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 16:38:48,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 16:38:48,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 16:38:48,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 16:38:48,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 16:38:48,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 16:38:48,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 16:38:48,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 16:38:48,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 16:38:48,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 16:38:48,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 16:38:48,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 16:38:48,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 16:38:48,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 16:38:48,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 16:38:48,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 16:38:48,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 16:38:48,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 16:38:48,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 16:38:48,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 16:38:48,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 16:38:48,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 16:38:48,753 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 16:38:48,783 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 16:38:48,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 16:38:48,784 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 16:38:48,784 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 16:38:48,785 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 16:38:48,785 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 16:38:48,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 16:38:48,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 16:38:48,786 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 16:38:48,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 16:38:48,787 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 16:38:48,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 16:38:48,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 16:38:48,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 16:38:48,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 16:38:48,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 16:38:48,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 16:38:48,797 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 16:38:48,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 16:38:48,798 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 16:38:48,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 16:38:48,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 16:38:48,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 16:38:48,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 16:38:48,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 16:38:48,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 16:38:48,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 16:38:48,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 16:38:48,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 16:38:48,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 16:38:48,800 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 16:38:48,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 16:38:48,801 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 16:38:48,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 16:38:48,801 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 16:38:48,801 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 011044826c7a01c153d09406112c335d599fb158d7a4b72e6a624d5427477c0d [2023-02-18 16:38:49,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 16:38:49,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 16:38:49,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 16:38:49,045 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 16:38:49,046 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 16:38:49,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c [2023-02-18 16:38:50,301 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 16:38:50,470 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 16:38:50,470 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c [2023-02-18 16:38:50,474 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef977624b/898346002dcc421fa45f5e3f3aacef99/FLAGbef42b2e6 [2023-02-18 16:38:50,484 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef977624b/898346002dcc421fa45f5e3f3aacef99 [2023-02-18 16:38:50,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 16:38:50,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 16:38:50,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 16:38:50,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 16:38:50,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 16:38:50,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:38:50" (1/1) ... [2023-02-18 16:38:50,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f52e61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:50, skipping insertion in model container [2023-02-18 16:38:50,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:38:50" (1/1) ... [2023-02-18 16:38:50,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 16:38:50,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 16:38:50,622 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c[576,589] [2023-02-18 16:38:50,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 16:38:50,655 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 16:38:50,668 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c[576,589] [2023-02-18 16:38:50,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 16:38:50,698 INFO L208 MainTranslator]: Completed translation [2023-02-18 16:38:50,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:50 WrapperNode [2023-02-18 16:38:50,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 16:38:50,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 16:38:50,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 16:38:50,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 16:38:50,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:50" (1/1) ... [2023-02-18 16:38:50,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:50" (1/1) ... [2023-02-18 16:38:50,733 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-02-18 16:38:50,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 16:38:50,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 16:38:50,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 16:38:50,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 16:38:50,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:50" (1/1) ... [2023-02-18 16:38:50,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:50" (1/1) ... [2023-02-18 16:38:50,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:50" (1/1) ... [2023-02-18 16:38:50,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:50" (1/1) ... [2023-02-18 16:38:50,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:50" (1/1) ... [2023-02-18 16:38:50,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:50" (1/1) ... [2023-02-18 16:38:50,764 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:50" (1/1) ... [2023-02-18 16:38:50,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:50" (1/1) ... [2023-02-18 16:38:50,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 16:38:50,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 16:38:50,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 16:38:50,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 16:38:50,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:50" (1/1) ... [2023-02-18 16:38:50,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 16:38:50,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:50,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 16:38:50,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 16:38:50,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 16:38:50,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 16:38:50,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 16:38:50,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 16:38:50,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 16:38:50,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 16:38:50,896 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 16:38:50,898 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 16:38:51,052 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 16:38:51,057 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 16:38:51,072 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-18 16:38:51,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:38:51 BoogieIcfgContainer [2023-02-18 16:38:51,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 16:38:51,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 16:38:51,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 16:38:51,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 16:38:51,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 04:38:50" (1/3) ... [2023-02-18 16:38:51,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6b5523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:38:51, skipping insertion in model container [2023-02-18 16:38:51,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:50" (2/3) ... [2023-02-18 16:38:51,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6b5523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:38:51, skipping insertion in model container [2023-02-18 16:38:51,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:38:51" (3/3) ... [2023-02-18 16:38:51,082 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound5.c [2023-02-18 16:38:51,095 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 16:38:51,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 16:38:51,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 16:38:51,175 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e436522, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 16:38:51,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 16:38:51,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 16:38:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 16:38:51,185 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:51,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:51,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:51,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:51,191 INFO L85 PathProgramCache]: Analyzing trace with hash -555122024, now seen corresponding path program 1 times [2023-02-18 16:38:51,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:51,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388858918] [2023-02-18 16:38:51,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:51,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:51,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:51,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388858918] [2023-02-18 16:38:51,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 16:38:51,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114363589] [2023-02-18 16:38:51,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:51,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:51,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:51,317 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:38:51,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 16:38:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:51,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 16:38:51,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:38:51,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:38:51,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114363589] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:38:51,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:38:51,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 16:38:51,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157628436] [2023-02-18 16:38:51,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:38:51,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 16:38:51,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:51,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 16:38:51,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 16:38:51,437 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:38:51,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:51,457 INFO L93 Difference]: Finished difference Result 55 states and 87 transitions. [2023-02-18 16:38:51,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 16:38:51,460 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-18 16:38:51,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:51,466 INFO L225 Difference]: With dead ends: 55 [2023-02-18 16:38:51,466 INFO L226 Difference]: Without dead ends: 25 [2023-02-18 16:38:51,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 16:38:51,472 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:51,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:38:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-18 16:38:51,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-18 16:38:51,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 16:38:51,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2023-02-18 16:38:51,505 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2023-02-18 16:38:51,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:51,505 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-02-18 16:38:51,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:38:51,506 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2023-02-18 16:38:51,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 16:38:51,507 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:51,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:51,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:51,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-18 16:38:51,719 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:51,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:51,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1985514477, now seen corresponding path program 1 times [2023-02-18 16:38:51,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:51,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113479327] [2023-02-18 16:38:51,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:51,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:51,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:51,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113479327] [2023-02-18 16:38:51,781 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 16:38:51,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574033306] [2023-02-18 16:38:51,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:51,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:51,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:51,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:38:51,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 16:38:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:51,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 16:38:51,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:38:51,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:38:51,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574033306] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:38:51,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:38:51,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 16:38:51,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517012130] [2023-02-18 16:38:51,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:38:51,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 16:38:51,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:51,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 16:38:51,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 16:38:51,893 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:38:51,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:51,909 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2023-02-18 16:38:51,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 16:38:51,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 16:38:51,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:51,910 INFO L225 Difference]: With dead ends: 34 [2023-02-18 16:38:51,910 INFO L226 Difference]: Without dead ends: 27 [2023-02-18 16:38:51,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 16:38:51,912 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:51,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:38:51,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-18 16:38:51,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-18 16:38:51,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 16:38:51,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-02-18 16:38:51,919 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2023-02-18 16:38:51,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:51,919 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-02-18 16:38:51,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:38:51,919 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-02-18 16:38:51,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 16:38:51,920 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:51,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:51,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:52,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-18 16:38:52,127 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:52,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:52,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1984024927, now seen corresponding path program 1 times [2023-02-18 16:38:52,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:52,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329883399] [2023-02-18 16:38:52,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:52,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:52,139 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:38:52,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550511993] [2023-02-18 16:38:52,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:52,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:52,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:52,141 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:38:52,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 16:38:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:52,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 16:38:52,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:38:52,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:38:52,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:52,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329883399] [2023-02-18 16:38:52,227 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:38:52,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550511993] [2023-02-18 16:38:52,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550511993] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:38:52,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:38:52,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 16:38:52,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428479706] [2023-02-18 16:38:52,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:38:52,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 16:38:52,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:52,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 16:38:52,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-18 16:38:52,230 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:38:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:52,322 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2023-02-18 16:38:52,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 16:38:52,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 16:38:52,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:52,324 INFO L225 Difference]: With dead ends: 37 [2023-02-18 16:38:52,324 INFO L226 Difference]: Without dead ends: 35 [2023-02-18 16:38:52,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-02-18 16:38:52,326 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 38 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:52,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 93 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 16:38:52,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-18 16:38:52,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2023-02-18 16:38:52,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 16:38:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-02-18 16:38:52,337 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 10 [2023-02-18 16:38:52,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:52,338 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-02-18 16:38:52,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:38:52,338 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-02-18 16:38:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 16:38:52,339 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:52,339 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:52,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:52,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:52,545 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:52,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:52,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2084809189, now seen corresponding path program 1 times [2023-02-18 16:38:52,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:52,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441848421] [2023-02-18 16:38:52,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:52,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:52,555 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:38:52,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727479448] [2023-02-18 16:38:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:52,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:52,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:52,558 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:38:52,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 16:38:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:52,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 16:38:52,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:38:52,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:38:52,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:52,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441848421] [2023-02-18 16:38:52,704 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:38:52,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727479448] [2023-02-18 16:38:52,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727479448] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 16:38:52,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 16:38:52,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-02-18 16:38:52,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238516319] [2023-02-18 16:38:52,705 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 16:38:52,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 16:38:52,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:52,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 16:38:52,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=67, Unknown=1, NotChecked=0, Total=90 [2023-02-18 16:38:52,707 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 16:38:52,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:52,849 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2023-02-18 16:38:52,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 16:38:52,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-18 16:38:52,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:52,853 INFO L225 Difference]: With dead ends: 50 [2023-02-18 16:38:52,853 INFO L226 Difference]: Without dead ends: 47 [2023-02-18 16:38:52,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2023-02-18 16:38:52,863 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:52,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 88 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 16:38:52,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-18 16:38:52,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-02-18 16:38:52,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 16:38:52,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2023-02-18 16:38:52,878 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 15 [2023-02-18 16:38:52,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:52,879 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2023-02-18 16:38:52,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 16:38:52,879 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2023-02-18 16:38:52,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 16:38:52,883 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:52,883 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:52,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:53,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:53,089 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:53,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:53,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2002825724, now seen corresponding path program 1 times [2023-02-18 16:38:53,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:53,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379704739] [2023-02-18 16:38:53,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:53,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:53,099 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:38:53,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108716218] [2023-02-18 16:38:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:53,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:53,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:53,101 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:38:53,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 16:38:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:53,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 16:38:53,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 16:38:53,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:38:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 16:38:53,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:53,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379704739] [2023-02-18 16:38:53,213 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:38:53,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108716218] [2023-02-18 16:38:53,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108716218] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 16:38:53,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 16:38:53,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-02-18 16:38:53,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590705468] [2023-02-18 16:38:53,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:38:53,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 16:38:53,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:53,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 16:38:53,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-18 16:38:53,216 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 16:38:53,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:53,264 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2023-02-18 16:38:53,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 16:38:53,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-02-18 16:38:53,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:53,266 INFO L225 Difference]: With dead ends: 52 [2023-02-18 16:38:53,266 INFO L226 Difference]: Without dead ends: 50 [2023-02-18 16:38:53,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-18 16:38:53,267 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:53,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 64 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:38:53,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-18 16:38:53,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-02-18 16:38:53,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 16:38:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2023-02-18 16:38:53,279 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 23 [2023-02-18 16:38:53,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:53,279 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2023-02-18 16:38:53,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 16:38:53,280 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2023-02-18 16:38:53,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 16:38:53,280 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:53,281 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:53,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:53,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:53,487 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:53,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:53,488 INFO L85 PathProgramCache]: Analyzing trace with hash -840648207, now seen corresponding path program 1 times [2023-02-18 16:38:53,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:53,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838162803] [2023-02-18 16:38:53,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:53,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:53,498 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:38:53,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629198315] [2023-02-18 16:38:53,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:53,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:53,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:53,511 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:38:53,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 16:38:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:53,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 16:38:53,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 16:38:53,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:38:53,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:53,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838162803] [2023-02-18 16:38:53,585 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:38:53,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629198315] [2023-02-18 16:38:53,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629198315] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:38:53,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:38:53,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 16:38:53,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392654799] [2023-02-18 16:38:53,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:38:53,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 16:38:53,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:53,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 16:38:53,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 16:38:53,590 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 16:38:53,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:53,624 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2023-02-18 16:38:53,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 16:38:53,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-02-18 16:38:53,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:53,628 INFO L225 Difference]: With dead ends: 81 [2023-02-18 16:38:53,628 INFO L226 Difference]: Without dead ends: 56 [2023-02-18 16:38:53,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 16:38:53,630 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:53,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:38:53,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-18 16:38:53,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-18 16:38:53,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 16:38:53,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2023-02-18 16:38:53,658 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 26 [2023-02-18 16:38:53,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:53,659 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2023-02-18 16:38:53,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 16:38:53,659 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2023-02-18 16:38:53,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 16:38:53,660 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:53,660 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:53,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:53,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:53,866 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:53,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:53,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2012484164, now seen corresponding path program 1 times [2023-02-18 16:38:53,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:53,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140246972] [2023-02-18 16:38:53,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:53,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:53,883 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:38:53,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396204752] [2023-02-18 16:38:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:53,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:53,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:53,889 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:38:53,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 16:38:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:53,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 16:38:53,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-18 16:38:53,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:38:53,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:53,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140246972] [2023-02-18 16:38:53,980 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:38:53,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396204752] [2023-02-18 16:38:53,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396204752] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:38:53,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:38:53,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 16:38:53,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83376918] [2023-02-18 16:38:53,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:38:53,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 16:38:53,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:53,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 16:38:53,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-18 16:38:53,983 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 16:38:54,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:54,072 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2023-02-18 16:38:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 16:38:54,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2023-02-18 16:38:54,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:54,076 INFO L225 Difference]: With dead ends: 62 [2023-02-18 16:38:54,076 INFO L226 Difference]: Without dead ends: 60 [2023-02-18 16:38:54,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-18 16:38:54,079 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:54,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 90 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 16:38:54,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-18 16:38:54,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-02-18 16:38:54,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.175) internal successors, (47), 41 states have internal predecessors, (47), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 16:38:54,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2023-02-18 16:38:54,093 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 33 [2023-02-18 16:38:54,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:54,093 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2023-02-18 16:38:54,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 16:38:54,094 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2023-02-18 16:38:54,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-18 16:38:54,094 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:54,095 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:54,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:54,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:54,296 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:54,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:54,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2020901362, now seen corresponding path program 1 times [2023-02-18 16:38:54,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:54,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780077203] [2023-02-18 16:38:54,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:54,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:54,316 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:38:54,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200795936] [2023-02-18 16:38:54,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:54,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:54,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:54,321 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:38:54,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 16:38:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:54,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 16:38:54,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 16:38:54,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:38:54,584 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 16:38:54,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:54,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780077203] [2023-02-18 16:38:54,585 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:38:54,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200795936] [2023-02-18 16:38:54,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200795936] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 16:38:54,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 16:38:54,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-02-18 16:38:54,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386595425] [2023-02-18 16:38:54,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 16:38:54,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 16:38:54,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:54,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 16:38:54,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-02-18 16:38:54,587 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-18 16:38:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:54,825 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2023-02-18 16:38:54,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 16:38:54,826 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 39 [2023-02-18 16:38:54,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:54,827 INFO L225 Difference]: With dead ends: 79 [2023-02-18 16:38:54,828 INFO L226 Difference]: Without dead ends: 77 [2023-02-18 16:38:54,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-02-18 16:38:54,828 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 31 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:54,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 118 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 16:38:54,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-18 16:38:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2023-02-18 16:38:54,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 16:38:54,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2023-02-18 16:38:54,843 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 39 [2023-02-18 16:38:54,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:54,844 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2023-02-18 16:38:54,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-18 16:38:54,844 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2023-02-18 16:38:54,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-18 16:38:54,849 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:54,849 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:54,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:55,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-18 16:38:55,055 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:55,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:55,056 INFO L85 PathProgramCache]: Analyzing trace with hash 803844641, now seen corresponding path program 1 times [2023-02-18 16:38:55,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:55,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577012612] [2023-02-18 16:38:55,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:55,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:55,064 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:38:55,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812284964] [2023-02-18 16:38:55,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:55,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:55,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:55,068 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:38:55,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 16:38:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:55,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 16:38:55,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:55,136 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-18 16:38:55,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:38:55,162 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-18 16:38:55,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:55,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577012612] [2023-02-18 16:38:55,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:38:55,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812284964] [2023-02-18 16:38:55,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812284964] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 16:38:55,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 16:38:55,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2023-02-18 16:38:55,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035052102] [2023-02-18 16:38:55,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 16:38:55,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 16:38:55,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:55,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 16:38:55,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-02-18 16:38:55,168 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-18 16:38:55,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:55,285 INFO L93 Difference]: Finished difference Result 180 states and 208 transitions. [2023-02-18 16:38:55,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 16:38:55,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 42 [2023-02-18 16:38:55,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:55,288 INFO L225 Difference]: With dead ends: 180 [2023-02-18 16:38:55,288 INFO L226 Difference]: Without dead ends: 173 [2023-02-18 16:38:55,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-02-18 16:38:55,290 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 57 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:55,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 231 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 16:38:55,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-02-18 16:38:55,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 159. [2023-02-18 16:38:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 105 states have (on average 1.1714285714285715) internal successors, (123), 108 states have internal predecessors, (123), 33 states have call successors, (33), 20 states have call predecessors, (33), 20 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-02-18 16:38:55,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2023-02-18 16:38:55,327 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 42 [2023-02-18 16:38:55,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:55,327 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2023-02-18 16:38:55,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-18 16:38:55,327 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2023-02-18 16:38:55,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-18 16:38:55,329 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:55,329 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:55,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:55,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:55,535 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:55,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:55,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1528082637, now seen corresponding path program 1 times [2023-02-18 16:38:55,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:55,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576503823] [2023-02-18 16:38:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:55,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:55,558 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:38:55,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [612427413] [2023-02-18 16:38:55,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:55,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:55,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:55,566 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:38:55,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 16:38:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:55,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-18 16:38:55,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-18 16:38:55,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:38:55,888 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-18 16:38:55,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:55,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576503823] [2023-02-18 16:38:55,889 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:38:55,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612427413] [2023-02-18 16:38:55,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612427413] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 16:38:55,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 16:38:55,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-02-18 16:38:55,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142530367] [2023-02-18 16:38:55,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:38:55,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 16:38:55,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:55,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 16:38:55,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-02-18 16:38:55,891 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-18 16:38:56,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:56,077 INFO L93 Difference]: Finished difference Result 159 states and 186 transitions. [2023-02-18 16:38:56,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 16:38:56,078 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 47 [2023-02-18 16:38:56,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:56,078 INFO L225 Difference]: With dead ends: 159 [2023-02-18 16:38:56,079 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 16:38:56,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-02-18 16:38:56,080 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:56,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 58 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 16:38:56,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 16:38:56,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 16:38:56,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:38:56,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 16:38:56,082 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2023-02-18 16:38:56,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:56,082 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 16:38:56,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-18 16:38:56,082 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 16:38:56,082 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 16:38:56,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 16:38:56,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:56,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-18 16:38:56,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 16:38:56,310 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse7 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse6 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse8 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse9 (or (and .cse7 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse7) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (.cse11 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)))) (let ((.cse0 (or (and .cse6 .cse7 .cse9 .cse11) (and .cse6 .cse7 .cse8 .cse9 .cse11))) (.cse3 (< ~counter~0 5)) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse4 (let ((.cse5 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse10 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse5 .cse6 .cse7 .cse9 .cse10 .cse11)))) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse1 .cse2) (and .cse3 .cse1 .cse4 .cse2) (and .cse1 .cse4 (<= (+ ~counter~0 (- 1)) 1) .cse2) (and (< (+ ~counter~0 1) 5) .cse1 .cse4 .cse2) (and .cse1 .cse4 .cse2))))) [2023-02-18 16:38:56,311 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-02-18 16:38:56,311 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 23 65) the Hoare annotation is: true [2023-02-18 16:38:56,311 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 16:38:56,311 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 16:38:56,311 INFO L899 garLoopResultBuilder]: For program point L49(lines 46 58) no Hoare annotation was computed. [2023-02-18 16:38:56,311 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-18 16:38:56,311 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2023-02-18 16:38:56,312 INFO L895 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse1 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse2 (or (and .cse1 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (.cse3 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse4 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1 .cse2 (<= (+ ~counter~0 (- 1)) 1) .cse3 .cse4) (and (< (+ ~counter~0 1) 5) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4) (and (= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 .cse1 .cse2 (<= ~counter~0 0) (= |ULTIMATE.start_main_~b~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) .cse3 .cse4) (and (< ~counter~0 5) .cse0 .cse1 .cse2 .cse3 .cse4)))) [2023-02-18 16:38:56,312 INFO L895 garLoopResultBuilder]: At program point L37-4(lines 37 61) the Hoare annotation is: (let ((.cse2 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse3 (or (and .cse2 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse2) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (let ((.cse0 (or (and (= |ULTIMATE.start_main_~a~0#1| 0) .cse2 .cse3 (= |ULTIMATE.start_main_~b~0#1| 0)) (and .cse2 .cse3))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse4 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse5 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and (< ~counter~0 5) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (< (+ ~counter~0 1) 5) .cse1 .cse2 .cse3 .cse4 .cse5))))) [2023-02-18 16:38:56,312 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 16:38:56,312 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse11 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse10 (< ~counter~0 5)) (.cse0 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse4 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse5 (or (and .cse3 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse3) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (.cse6 (>= |ULTIMATE.start_main_~r~0#1| (* 2 .cse11))) (.cse7 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse8 (= |ULTIMATE.start_main_~b~0#1| .cse11)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse9 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and (< (+ ~counter~0 1) 5) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and (or (and .cse10 .cse1 .cse3 .cse4 .cse5 .cse6 .cse8) (and .cse1 .cse3 .cse4 .cse5 .cse6 .cse8)) .cse2 .cse9) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= (+ ~counter~0 (- 1)) 1) .cse7 .cse8 .cse9) (and (or (and .cse0 .cse1 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse10 .cse0 .cse1 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8)) .cse2 .cse9)))) [2023-02-18 16:38:56,312 INFO L899 garLoopResultBuilder]: For program point L54-1(line 54) no Hoare annotation was computed. [2023-02-18 16:38:56,313 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2023-02-18 16:38:56,313 INFO L895 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse8 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse9 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse7 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse10 (or (and .cse8 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse8) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (.cse13 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)))) (let ((.cse2 (and .cse7 .cse8 .cse10 .cse13)) (.cse3 (and .cse7 .cse8 .cse9 .cse10 .cse13))) (let ((.cse0 (or .cse2 .cse3)) (.cse1 (< ~counter~0 5)) (.cse14 (< (+ ~counter~0 1) 5)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse12 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse11 (+ ~counter~0 (- 1))) (.cse5 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and (or (and .cse0 .cse1) .cse2 .cse3) .cse4 .cse5) (and .cse6 .cse7 .cse4 .cse8 .cse9 .cse10 (<= .cse11 1) .cse12 .cse13 .cse5) (and .cse0 .cse14 .cse4 .cse5) (and (or (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse12 .cse13) (and .cse1 .cse6 .cse7 .cse8 .cse9 .cse10 .cse12 .cse13)) .cse4 .cse5) (and .cse14 .cse6 .cse7 .cse4 .cse8 .cse9 .cse10 .cse12 .cse13 .cse5) (and .cse6 .cse7 .cse4 .cse8 .cse10 .cse12 .cse13 (<= .cse11 0) .cse5)))))) [2023-02-18 16:38:56,313 INFO L899 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2023-02-18 16:38:56,313 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 16:38:56,313 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse1 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse2 (or (and .cse1 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (.cse3 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse4 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and (< (+ ~counter~0 1) 5) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4) (and (< ~counter~0 5) .cse0 .cse1 .cse2 .cse3 .cse4) (and (= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) .cse3 (<= (+ ~counter~0 (- 1)) 0) .cse4)))) [2023-02-18 16:38:56,314 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse2 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse3 (or (and .cse2 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse2) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (let ((.cse0 (or (and (= |ULTIMATE.start_main_~a~0#1| 0) .cse2 .cse3 (= |ULTIMATE.start_main_~b~0#1| 0)) (and .cse2 .cse3))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse4 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse5 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and (< ~counter~0 5) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (< (+ ~counter~0 1) 5) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) .cse4 (<= (+ ~counter~0 (- 1)) 0) .cse5))))) [2023-02-18 16:38:56,314 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2023-02-18 16:38:56,314 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse7 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse6 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse8 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse9 (or (and .cse7 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse7) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (.cse11 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)))) (let ((.cse0 (or (and .cse6 .cse7 .cse9 .cse11) (and .cse6 .cse7 .cse8 .cse9 .cse11))) (.cse1 (< ~counter~0 5)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse4 (let ((.cse5 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse10 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse5 .cse6 .cse7 .cse9 .cse10 .cse11)))) (.cse3 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse2 .cse3) (and .cse1 .cse2 .cse4 .cse3) (and .cse2 .cse4 (<= (+ ~counter~0 (- 1)) 1) .cse3) (and (< (+ ~counter~0 1) 5) .cse2 .cse4 .cse3) (and .cse2 .cse4 .cse3))))) [2023-02-18 16:38:56,314 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse7 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse6 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse8 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse9 (or (and .cse7 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse7) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (.cse11 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)))) (let ((.cse0 (or (and .cse6 .cse7 .cse9 .cse11) (and .cse6 .cse7 .cse8 .cse9 .cse11))) (.cse1 (< ~counter~0 5)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse4 (let ((.cse5 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse10 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse5 .cse6 .cse7 .cse9 .cse10 .cse11)))) (.cse3 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse2 .cse3) (and .cse1 .cse2 .cse4 .cse3) (and .cse2 .cse4 (<= (+ ~counter~0 (- 1)) 1) .cse3) (and (< (+ ~counter~0 1) 5) .cse2 .cse4 .cse3) (and .cse2 .cse4 .cse3))))) [2023-02-18 16:38:56,314 INFO L899 garLoopResultBuilder]: For program point L39(lines 37 61) no Hoare annotation was computed. [2023-02-18 16:38:56,315 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-18 16:38:56,315 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-18 16:38:56,315 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-18 16:38:56,315 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-18 16:38:56,315 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: (let ((.cse5 (+ ~counter~0 (- 1)))) (let ((.cse3 (= 0 |__VERIFIER_assert_#in~cond|)) (.cse10 (< (+ ~counter~0 1) 5)) (.cse0 (= |__VERIFIER_assert_#in~cond| 1)) (.cse12 (< ~counter~0 5)) (.cse8 (<= .cse5 1))) (let ((.cse9 (not .cse8)) (.cse7 (and .cse0 .cse12)) (.cse4 (not .cse0)) (.cse11 (not .cse10)) (.cse6 (not .cse12)) (.cse1 (not .cse3))) (and (let ((.cse2 (<= .cse5 0))) (or (and .cse0 .cse1 .cse2) .cse3 .cse4 (not .cse2))) (or .cse6 .cse4 .cse7) (or .cse3 .cse4 (and .cse0 .cse1 .cse8) .cse9) (or .cse3 .cse4 (and .cse0 .cse1 .cse10) .cse11) (or (and .cse1 .cse10) .cse3 .cse11) (or .cse4 (and .cse0 .cse8) .cse9) (or .cse3 .cse6 .cse4 (and .cse0 .cse12 .cse1)) (or .cse0 .cse7 (and (or .cse6 .cse4) .cse4)) (or .cse4 (and .cse0 .cse10) .cse11) (or .cse3 .cse6 (and .cse12 .cse1)))))) [2023-02-18 16:38:56,315 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-18 16:38:56,319 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:56,320 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 16:38:56,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 04:38:56 BoogieIcfgContainer [2023-02-18 16:38:56,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 16:38:56,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 16:38:56,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 16:38:56,349 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 16:38:56,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:38:51" (3/4) ... [2023-02-18 16:38:56,352 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 16:38:56,361 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-18 16:38:56,365 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-02-18 16:38:56,366 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-18 16:38:56,366 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-18 16:38:56,366 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 16:38:56,400 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 16:38:56,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 16:38:56,401 INFO L158 Benchmark]: Toolchain (without parser) took 5914.23ms. Allocated memory was 130.0MB in the beginning and 167.8MB in the end (delta: 37.7MB). Free memory was 84.2MB in the beginning and 114.0MB in the end (delta: -29.8MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2023-02-18 16:38:56,401 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory was 99.3MB in the beginning and 99.3MB in the end (delta: 83.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:38:56,402 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.76ms. Allocated memory is still 130.0MB. Free memory was 83.9MB in the beginning and 73.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 16:38:56,402 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.02ms. Allocated memory is still 130.0MB. Free memory was 73.4MB in the beginning and 71.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 16:38:56,402 INFO L158 Benchmark]: Boogie Preprocessor took 35.97ms. Allocated memory is still 130.0MB. Free memory was 71.9MB in the beginning and 70.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 16:38:56,402 INFO L158 Benchmark]: RCFGBuilder took 304.55ms. Allocated memory is still 130.0MB. Free memory was 70.7MB in the beginning and 60.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 16:38:56,403 INFO L158 Benchmark]: TraceAbstraction took 5271.60ms. Allocated memory was 130.0MB in the beginning and 167.8MB in the end (delta: 37.7MB). Free memory was 59.6MB in the beginning and 117.2MB in the end (delta: -57.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:38:56,403 INFO L158 Benchmark]: Witness Printer took 51.70ms. Allocated memory is still 167.8MB. Free memory was 117.2MB in the beginning and 114.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 16:38:56,405 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory was 99.3MB in the beginning and 99.3MB in the end (delta: 83.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 212.76ms. Allocated memory is still 130.0MB. Free memory was 83.9MB in the beginning and 73.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.02ms. Allocated memory is still 130.0MB. Free memory was 73.4MB in the beginning and 71.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.97ms. Allocated memory is still 130.0MB. Free memory was 71.9MB in the beginning and 70.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 304.55ms. Allocated memory is still 130.0MB. Free memory was 70.7MB in the beginning and 60.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5271.60ms. Allocated memory was 130.0MB in the beginning and 167.8MB in the end (delta: 37.7MB). Free memory was 59.6MB in the beginning and 117.2MB in the end (delta: -57.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 51.70ms. Allocated memory is still 167.8MB. Free memory was 117.2MB in the beginning and 114.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 228 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 213 mSDsluCounter, 965 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 665 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 731 IncrementalHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 300 mSDtfsCounter, 731 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 413 GetRequests, 330 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred in iteration=9, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 31 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 60 PreInvPairs, 106 NumberOfFragments, 3886 HoareAnnotationTreeSize, 60 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 391 ConstructedInterpolants, 0 QuantifiedInterpolants, 1505 SizeOfPredicates, 38 NumberOfNonLiveVariables, 891 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 372/416 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((((((((1 <= r && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a) || ((((1 <= r && y >= 1) && r >= 0) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a)) && counter < 5) || (((1 <= r && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a)) || ((((1 <= r && y >= 1) && r >= 0) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a)) && x == (q + a) * y + (r + -b)) && x == q * y + r) || (((((((((q == 0 && 1 <= r) && x == (q + a) * y + (r + -b)) && y >= 1) && r >= 0) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && counter + -1 <= 1) && r == x) && b == y * a) && x == q * y + r)) || (((((((1 <= r && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a) || ((((1 <= r && y >= 1) && r >= 0) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a)) && counter + 1 < 5) && x == (q + a) * y + (r + -b)) && x == q * y + r)) || (((((((((q == 0 && 1 <= r) && y >= 1) && r >= 0) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && r == x) && b == y * a) || (((((((counter < 5 && q == 0) && 1 <= r) && y >= 1) && r >= 0) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && r == x) && b == y * a)) && x == (q + a) * y + (r + -b)) && x == q * y + r)) || (((((((((counter + 1 < 5 && q == 0) && 1 <= r) && x == (q + a) * y + (r + -b)) && y >= 1) && r >= 0) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && r == x) && b == y * a) && x == q * y + r)) || ((((((((q == 0 && 1 <= r) && x == (q + a) * y + (r + -b)) && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && r == x) && b == y * a) && counter + -1 <= 0) && x == q * y + r) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((x == (q + a) * y + (r + -b) && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && counter + -1 <= 1) && b == y * a) && x == q * y + r) || (((((counter + 1 < 5 && x == (q + a) * y + (r + -b)) && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a) && x == q * y + r)) || ((((x == (q + a) * y + (r + -b) && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a) && x == q * y + r)) || (((((((((a == 0 && q == 0) && x == (q + a) * y + (r + -b)) && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && counter <= 0) && b == 0) && r == x) && b == y * a) && x == q * y + r)) || (((((counter < 5 && x == (q + a) * y + (r + -b)) && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a) && x == q * y + r) RESULT: Ultimate proved your program to be correct! [2023-02-18 16:38:56,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE